Auto Trans

P0501-VEHICLE SPEED SENSOR #1 PERFORMANCE (AUTO TRANS)

For a complete wiring diagram Consult Diagrams/Electrical

- When Monitored:
Engine running. Transmission not in park or neutral. Brakes not applied. Engine run time greater than 10 seconds.

- Set Condition:
The PCM does not see vehicle speed signal from the transmission control side of the PCM. Two Trip Fault.





Diagnostic Test

1. ACTIVE DTC
Ignition on, engine not running.
With a scan tool, read DTCs.
Is the DTC active at this time?

Yes

- Go To 2

No

- Refer to the INTERMITTENT CONDITION Diagnostic Procedure.Intermittent Condition
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test

2. TRANSMISSION DTC(S)
Turn the ignition on.
With the scan tool, check the Transmission DTCs.
Are there any Transmission DTCs present?

Yes

- Diagnose and repair those DTCs.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test

No

- Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary. Replace and program the Powertrain Module.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test